Pyrosulfuryl chloride

Base Information

• Chemical Name: Pyrosulfuryl chloride
• CAS No.: 7791-27-7
• Molecular Formula: Cl2O5S2
• Molecular Weight: 215.035
• UN Number: 1817
• UNII: DKB8YHP7JA
• DSSTox Substance ID: DTXSID90999111
• Nikkaji Number: J95.297D
• Wikidata: Q15632724
• Mol file: 7791-27-7.mol

Synonyms:PYROSULFURYL CHLORIDE;Disulfuryl chloride;Chlorosulfonic anhydride;7791-27-7;Sulfur pentoxydichloride;Disulfur pentoxydichloride;Disulfuryl dichloride;DKB8YHP7JA;UNII-DKB8YHP7JA;HSDB 1203;UN1817;Pyrosulfurylchlorid;pyrosulfuryl dichloride;Cloruro de disulfurilo;Cl2O5S2;Pyrosulfuryl chloride (DOT;Cl2-O5-S2;DTXSID90999111;PYROSULFURYL CHLORIDE [MI];NA1817;CHLOROSULFONIC ANHYDRIDE [HSDB];PYROSULFURYL CHLORIDE (S2O5CL2);Pyrosulfuryl chloride [UN1817] [Corrosive];Q15632724

Chemical Property of Pyrosulfuryl chloride

Chemical Property:

• Melting Point: -37oC
• Refractive Index: 1.937
• Boiling Point: °Cat760mmHg
• Flash Point: °C
• PSA: 94.27000
• Density: 2.156g/cm³
• LogP: 2.13180
• XLogP3: 0.8
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 5
• Rotatable Bond Count: 2
• Exact Mass: 213.8564208
• Heavy Atom Count: 9
• Complexity: 227
• Transport DOT Label: Corrosive

Purity/Quality:

98%, ^*data from raw suppliers

PYROSULFURYL CHLORIDE 95.00% ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Decomposes violently with water to sulfuric acid and hydrochloric acid. Corrosive to tissue.
• Hazard Codes: Decomposes violently with water to sulfuric acid and hydrochloric acid. Corrosive to tissue.

MSDS Files:

SDS file from LookChem

Useful:

• Chemical Classes: Toxic Gases & Vapors -> Other Toxic Gases & Vapors
• Canonical SMILES: O=S(=O)(OS(=O)(=O)Cl)Cl
• Uses: Organic synthesis.

Technology Process of Pyrosulfuryl chloride

There total 81 articles about Pyrosulfuryl chloride which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

disulfuric anhydride + phosphorus pentachloride (10026-13-8,874483-75-7) → pyrosulfuryl chloride (7791-27-7) + trichlorophosphate (10025-87-3,12599-09-6,63736-95-8,39380-77-3)

Guidance literature:

In neat (no solvent); react. with S2O6 under evolution of heat; formation of a brown liquid contg. POCl3 and S2O5Cl2;;

Reference yield:

phosphorus pentachloride (10026-13-8,874483-75-7) + sulfur trioxide (7446-11-9) → pyrosulfuryl chloride (7791-27-7) + trichlorophosphate (10025-87-3,12599-09-6,63736-95-8,39380-77-3)

Guidance literature:

excess SO3, slight heating;

Reference yield:

lead(II) sulfate + phosphorus pentachloride (10026-13-8,874483-75-7) → sulfuryl dichloride (7791-25-5) + pyrosulfuryl chloride (7791-27-7) + sulfur dioxide (7446-09-5,12143-17-8,89125-89-3) + chlorine (7782-50-5) + trichlorophosphate (10025-87-3,12599-09-6,63736-95-8,39380-77-3)

Guidance literature:

In neat (no solvent); byproducts: SO2Cl2; heating on a water bath with a reflux condenser; formation of SO2, Cl2, POCl3, small amount of SOCl2 and S2O5Cl2 and traces of SO2Cl2;;

upstream raw materials:

phosphorus pentachloride

sulfur trioxide

sodium chloride

sulfur dichloride

Downstream raw materials:

sulfur dioxide

iodine

sulfur trioxide

antimony(III) chloride

Refernces

• 1、 -. "Para-ester synthesis process for recycling hydrogen chloride". Paragraph 0086; 0092-0106; 0112-0126; 0132-0146; 0152-0166. . Retrieved 2020/05/01.
• 2、 Siddiqi, Z. A.,Ansari, N. A.,Aslam, M.,Lutfullah,Zaidi, S. A. A.. "Conductometric and Spectrophotometric Studies on the Ionization of Iodine and Its Compounds in Chlorosulphuric Acid". . p. 30 - 32. Retrieved 2007/10/02.